Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B
The AirTAC Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B is a genuine double-acting profile-type cylinder with a Ø50mm bore, 125mm stroke and a built-in 4M210-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ50 mm
- Stroke125 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B
The SAUF50X125S-08B is a double-acting profile cylinder with a built-in AirTAC 4M210-08 5/2 solenoid valve on the cap. One DC24V coil signal drives the actuator, eliminating remote plumbing and saving a manifold slot. The extruded aluminum barrel is shorter than an ISO 15552 unit of the same bore. The bore sets the 1/4" cylinder port, while the valve port is 1/4" with a 16 mm2 flow (Cv 0.89) and a 5 cycle/s limit.
Size force within the 0.15-0.8 MPa valve window, even though the cylinder body rates to 1.0 MPa. At 0.5 MPa it pushes 982 N and pulls 825 N. The computed safe working load is about 589 N, and it can vertically lift roughly 50 kg with a 2:1 margin. The S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches, and the terminal entry coil is IP65 rated.
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B Technical Specifications
| Model | Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B |
|---|---|
| Series | SAUF profile cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | 1/4" |
| Rod thread | M16×1.5 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-08 (5/2) |
|---|---|
| Valve flow | 16.0 mm² (Cv 0.89) |
| Max frequency | 5 cycle/sec |
| Coil voltage | DC24V · DC 3.0 W |
| Electrical entry | Terminal · IP65 · B class |
| Response time | 0.05 s and below |
| Operating pressure | 0.15 – 0.8 MPa (valve limit) |
| Speed range | 30 – 800 mm/s |
The cylinder rates to 1.0 MPa but the built-in valve operates 0.15–0.8 MPa, so run the assembled SAUF at 0.15–0.8 MPa. Default: rod retracts when the coil is energised (reconfigurable to extend). Specs follow the official AirTAC SAUF datasheet. Port options: PT / G.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
Sized within the valve's 0.15–0.8 MPa range. Actual usable force is lower than theoretical due to friction and back-pressure.
Model Code: Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B
| SAUF | Profile cylinder with built-in 4M valve. |
|---|---|
| 50×125 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| B | Coil voltage DC24V. |
| I / (blank) | Terminal electrical entry. |
SAUF does not hold its load without air — the valve routes air, it is not a lock. For a held load, add an external rod lock or a pilot-operated check valve.
Where the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B Is Used
Decentralized Clamping
Ideal for a machining cell where each clamping point needs its own DC24V signal without running tubes back to a central manifold.
Inline Divert Gate
A single coil drives the divert arm. The 4M210-08 valve handles 5 cycles/s for fast package sorting.
Independent Lift Stop
Perfect for a lift station on a packing line. The built-in magnet works with CMSG sensors for position feedback.
Is the Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B the Right Choice?
Compare neighbours: bore 40 pushes 628 N at 0.5 MPa, while bore 63 pushes 1559 N. This 50 mm bore gives 982 N push and 825 N pull at 0.5 MPa. Confirm the DC24V terminal entry and PT threads suit your control system. The default action retracts the rod when energised, but repositioning the valve changes it to extend-when-energised. Always size within the 0.15-0.8 MPa valve range. The valve only routes air and is not a lock; add an external rod lock or pilot-operated check valve to hold a load. For this 125 mm stroke side-load is minimal, but for strokes over 300 mm add a guide.
Quick checklist
- ✓ Force at 0.15–0.8 MPa
- ✓ Coil voltage matches panel
- ✓ Terminal vs grommet entry
- ✓ Retract- or extend-when-energised
- ✓ Load-holding → external rod lock
Airtac SAUF Series Valve-Mounted Air Cylinder SAUF50X125S-08B FAQ
It pushes 982 N and pulls 825 N at 0.5 MPa. The built-in valve is a 4M210-08 with 1/4" port and Cv 0.89. The coil is DC24V with terminal entry. Although the cylinder body rates to 1.0 MPa, the assembled unit operates at 0.15-0.8 MPa.
The valve routes air and does not lock the load; you need an external rod lock or pilot-operated check valve to hold position. The rod retracts by default when the coil is energised, but you can reposition the valve to make it extend when energised.
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